a = int(input())
if (a >= 400) and (a <= 599) :
    print(8)
if (a >= 600) and (a <= 799) :
    print(7)
if (a >= 800) and (a <= 999) :
    print(6)
if (a >= 1000) and (a <= 1199) :
    print(5)
if (a >= 1200) and (a <= 1399) :
    print(4)
if (a >= 1400) and (a <= 1599) :
    print(3)
if (a >= 1600) and (a <= 1799) :
    print(2)
if (a >= 1800) and (a <= 1999) :
    print(1) a = int(input()) a int(input()) int input() input if (a >= 400) and (a <= 599) :
    print(8) (a >= 400) and (a <= 599) a >= 400 a 400 a <= 599 a 599 print(8) print 8 if (a >= 600) and (a <= 799) :
    print(7) (a >= 600) and (a <= 799) a >= 600 a 600 a <= 799 a 799 print(7) print 7 if (a >= 800) and (a <= 999) :
    print(6) (a >= 800) and (a <= 999) a >= 800 a 800 a <= 999 a 999 print(6) print 6 if (a >= 1000) and (a <= 1199) :
    print(5) (a >= 1000) and (a <= 1199) a >= 1000 a 1000 a <= 1199 a 1199 print(5) print 5 if (a >= 1200) and (a <= 1399) :
    print(4) (a >= 1200) and (a <= 1399) a >= 1200 a 1200 a <= 1399 a 1399 print(4) print 4 if (a >= 1400) and (a <= 1599) :
    print(3) (a >= 1400) and (a <= 1599) a >= 1400 a 1400 a <= 1599 a 1599 print(3) print 3 if (a >= 1600) and (a <= 1799) :
    print(2) (a >= 1600) and (a <= 1799) a >= 1600 a 1600 a <= 1799 a 1799 print(2) print 2 if (a >= 1800) and (a <= 1999) :
    print(1) (a >= 1800) and (a <= 1999) a >= 1800 a 1800 a <= 1999 a 1999 print(1) print 1 a = int(input()) int(input()) a
a = int(input())
if (a >= 400) and (a <= 599) :
    print(8)
if (a >= 600) and (a <= 799) :
    print(7)
if (a >= 800) and (a <= 999) :
    print(6)
if (a >= 1000) and (a <= 1199) :
    print(5)
if (a >= 1200) and (a <= 1399) :
    print(4)
if (a >= 1400) and (a <= 1599) :
    print(3)
if (a >= 1600) and (a <= 1799) :
    print(2)
if (a >= 1800) and (a <= 1999) :
    print(1)